<template>
   <div>
    <div class="item">
      <!-- 设置插槽 -->
       <slot name="main"></slot>
    </div>
</div>
  </template>
  <script setup lang="ts">
  </script>
 <style lang="scss">
 .item {
   /* 高度410px */
   height: 5.125rem;
   border: 1px solid blue;
   /* 外边距20px */
   margin: 0.25rem;
   background-color: rgba(13, 130, 255, 0.851);
 }
 </style>